Demo: Performing an In-Place Upgrade of a Data-tier Application
The Data-Tier Application Framework (DAC Fx) is a powerful new way to deploy and upgrade database projects for both your on-premise and cloud applications. Prior releases of DAC Fx only supported side-by-side upgrades. SQL Server 2012 includes DAC Fx 3.0, which supports the ability to perform in-place upgrades.
Dr Greg Low
SQL Server MVP and Microsoft RD